When does the Time Between Overhaul (TBO) period begin for a Rescue Hoist / Winch?

The Time Between Overhaul (TBO) period begins from the date of manufacture of a fielded new Rescue Hoist / Winch or date of last overhaul for a recently overhauled Rescue Hoist / Winch. For more details access SIL 01 Maintenance on our website.